gcc - Should all code compiled for 32 bit machines be in 4 byte chunks?

Question

I have a simple 32-bit assembly code that I wrote:

movl  $0x542412e6, %eax
movl  %ebp , %edx
addl  $0x30, %edx
movl  %edx, %ebp
pushl 0x08048dd6
ret

When I run this command:

gcc -m32 -c e.s

I get the following 18 bytes:

0:  b8 e6 12 24 54          mov    $0x542412e6,%eax
5:  89 ea                   mov    %ebp,%edx
7:  83 c2 30                add    $0x30,%edx
a:  89 d5                   mov    %edx,%ebp
c:  68 d6 8d 04 08          push   $0x8048dd6
11: c3                      ret 

Why is the object code 18 bytes and not 20 or 16? Shouldn't it always be in 4-byte words for a 32-bit machine?

Answer 1

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